1
Rotation
The spin of a body on its axis.
2
Day
The time required for Earth to rotate once on its axis.
3
Revolution
The motion of a body that travels around another body in space; one complete trip along an orbit.
4
Year
The time required for Earth to orbit around the sun.
5
Season
A division of the year that is characterized by recurring weather conditions and determined by both Earth's tilt relative to the sun and Earth's position in its orbit around the sun.
6
Equinox
The movement when the sun appears to cross the celestial equator.
7
Solstice
The point at which the sun is as far north or as far south of the equator as possible.